Home / 2,660.76-3,987.70-1,837.72

Finding the Fourth Proportional to 2,660.76, 3,987.70 and 1,837.72

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Solution

The fourth proportional to 2,660.76, 3,987.70 and 1,837.72 is: 2,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.76 : 3,987.70 = 1,837.72 : x
  2. Step 2: Convert to fraction form
    2,660.76/3,987.70 = 1,837.72/x
  3. Step 3: Cross multiply
    2,660.76x = 3,987.70 × 1,837.72
  4. Step 4: Simplify right side
    2,660.76x = 7,328,276.04
  5. Step 5: Solve for x
    x = 7,328,276.04/2,660.76
  6. Step 6: Final answer
    x = 2,754.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.